Marc Benioff, the chief executive of Salesforce, has pitted himself against Jack Dorsey, the chief executive of Twitter and Square, by spending millions of dollars to fund campaigns promoting the passage of a homelessness benefits initiative in the city.

We were young misfits in 1980s San Francisco, taking care of our friend, who was dying, and waiting for our own diagnoses. We were doing, selling, stealing drugs, staying as high we could. Looking back, I cringe. Yet we did the best we could.